| In the face of the increasing resources and environment problems, low carbon manufacturing received extensive attention of people. Manufacturing industry is the pillar industry of national economy development, but at the same time, the rapid development of manufacturing industry in the field of the whole industry in China is the main source of energy consumption and carbon emissions. How to reduce energy consumption and carbon emissions in the manufacturing process, then explore a road of the sustainable development of low carbon manufacturing is the inevitable choice of machinery manufacturing in China.The typical machine tool parts of carbon emissions were analyzed in this article, gradually to consider the production process of carbon emissions, then refinements to the whole life cycle of carbon emissions, and the carbon emission for grinding process were specifically analyzed, finally through process optimization and process parameter optimization can effective to reduce carbon emissions.Firstly, the background and significance of the research were introduced and the research status of domestic and foreign low carbon manufacturing were summarized in this paper. Then the main research content and the structure of the thesis were described.The carbon emissions of the whole production process of the production, heat treatment process and machining process of the parts were analyzed. Then the carbon emissions quantitative model were established based on the material flow, energy flow and environmental emission flow which can be used to identify and analyze the various stages of carbon emissions. The main shaft sleeve of grinding machine in the production process were combined to verify and estimate carbon emissions. Then it were used to research the carbon emission optimization, and the result showed that the process optimization can effectively reduce carbon emissions.The production, processing, using, recycling and transporting of machine tool based on the analysis of machine tool parts life cycle stage and its carbon emission reducing contribution were analyzed. A carbon system running model of machine tool parts based on life cycle perspective was presented.Carbon emissions of the grinding process were analyzed, based on the energy consumption, material consumption and consumption of grinding wheel grinding fluid loss. The carbon efficiency as the low carbon manufacturing comprehensive evaluation index were presented. The carbon efficiency was defined as the produced carbon emissions per unit volume which was cutted.Combining with processing time model which through the establishment of carbon efficiency model, a multi-objective optimization model was established based on the genetic algorithms. The minimum processing time and the optimal carbon efficiency were set as the optimization objectives, the grinding depth, feed speed and grinding speed as optimization variables. An orthogonal experiment case of the key machining processing was performed to verify the feasibility and practicability of the proposed model, the optimized grinding parameters were verified to reduce the process time and increase the carbon efficiency. |
